The normal range for the alanine aminotransferase, or ALT, enzyme which is liver specific is 10-100 U/L, according to the Canine Liver Disease Foundation. Elevated ALT enzymes are usually due to cell damage caused by leakage.
The metabolism of fats and proteins is orchestrated by the liver in conjunction with the lymphatic system, the endocrine system and the circulatory system, explains CLDF. It is very resilient, but if it is compromised in any way, it affects a pet's overall health.
The early signs of liver disease are variable and subtle. There may not be any symptoms during the early stages, explains CLDF. One of the most common symptoms of liver disease is loss of appetite. If a dog's eating and bathroom habits have changed even slightly for a week, it is very important that it be reported to a veterinarian as soon as possible.
Having a full liver chemistry panel done every 3 to 4 months helps in catching elevated liver levels early, advises CLDF. If a liver problem is found, prompt treatment can reduce the likelihood of further damage and health issues.